
<template>
  <div class="execution">
    <basic-container>
      <avue-crud
        ref="crud"
        :page.sync="page"
        :data="tableData"
        :permission="permissionList"
        :table-loading="tableLoading"
        :option="tableOption"
        :upload-after="uploadAfter"
        @on-load="getList"
        @search-change="searchChange"
        @refresh-change="refreshChange"
        @size-change="sizeChange"
        @current-change="currentChange"
        @row-del="rowDel"
      >
        <template slot="menu" slot-scope="scope">
          <el-button
            type="text"
            size="small"
            icon="el-icon-download"
            @click="download(scope.row, scope.index)"
            >下载
          </el-button>
        </template>
      </avue-crud>
    </basic-container>
  </div>
</template>

<script>
import { delObj, fetchList } from "@/api/admin/file";
import { tableOption } from "@/const/crud/admin/file";
import { mapGetters } from "vuex";

export default {
  name: "sys-file",
  data() {
    return {
      searchForm: {},
      tableData: [],
      page: {
        total: 0, // 总页数
        currentPage: 1, // 当前页数
        pageSize: 20 // 每页显示多少条
      },
      tableLoading: false,
      tableOption: tableOption
    };
  },
  computed: {
    ...mapGetters(["permissions"]),
    permissionList() {
      return {
        addBtn: this.vaildData(this.permissions.sys_file_add, true),
        delBtn: this.vaildData(this.permissions.sys_file_del, true),
        editBtn: this.vaildData(this.permissions.sys_file_edit, false)
      };
    }
  },
  methods: {
    getList(page, params) {
      this.tableLoading = true;
      fetchList(
        Object.assign(
          {
            descs: "create_time",
            current: page.currentPage,
            size: page.pageSize
          },
          params,
          this.searchForm
        )
      )
        .then(response => {
          this.tableData = response.data.data.records;
          this.page.total = response.data.data.total;
          this.tableLoading = false;
        })
        .catch(() => {
          this.tableLoading = false;
        });
    },
    rowDel: function(row, index) {
      let _this = this;
      // 是否确认删除
      this.$confirm(`是否确认删除ID为${row.id},文件名为${row.fileName},存储文件名为${row.original}的文件`, "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(function() {
          return delObj(row.id);
        })
        .then(data => {
          _this.$message.success("删除成功");
          this.getList(this.page);
        });
    },
    searchChange(form, done) {
      this.searchForm = form;
      this.page.currentPage = 1;
      this.getList(this.page, form);
      done();
    },
    refreshChange() {
      this.getList(this.page);
    },
    sizeChange(pageSize) {
      this.page.pageSize = pageSize;
    },
    currentChange(current) {
      this.page.currentPage = current;
    },
    download: function(row, index) {
      // 临时产生一个超链接 主动触发超链接后删除超链接对象 主动下载文件
      const link = document.createElement("a");
      link.href = row.fileUrl
      link.download = row.fileName;
      document.body.appendChild(link);
      link.click();
      window.setTimeout(function () {
      document.body.removeChild(link);
    }, 0);
    },
    uploadAfter(res, done, loading) {
      if (!this.validatenull(res.fileName)) {
        this.$message.success("上传成功");
        this.getList(this.page);
      }
      done();
    }
  }
};
</script>
